Many of you have written us asking about an official letter warning you about your water supply in Warner Robins. Some of you are confused about what it means and whether you should be concerned.

The letter reads important information about your drinking water and levels of thallium above the drinking water standards.

First let's start with what thallium is. According to the Agency for Toxic Substances and Disease Registry, thallium in it's pure form is a bluish white metal found in trace amounts in the earth's crust, and it may enter the environment from coal burning.

13WMAZ's Jennifer Moulliet sat down with Marianne Golmitz, the Utilities Engineer for the City of Warner Robins to find out why the letter was sent to everyone who receives water from the city.

She says traces of thallium came up in a survey, but it may have been a sampling error taken at a plant that isn't currently in service.

"You have to be very clear on how you do your sampling and how you prepare your sampling, because you can contaminate the sampling very,very,very easily and just going back and doing some investigations we feel like it's a sampling error," explains Golmitz.

She says they sampled all wells in the system several times, but according to state law if a sample comes back twice within three years containing traces of a contaminant you have to send out a letter to consumers. Traces of thallium came back in 2010 and again in 2013.

"We don't choose the wording. We can't change it or add to it. We just have to send it out; it's a rule. But it should be noted that this was on an inactive well, was not part of the drinking system so all of our samples everywhere else are showing non-detect for thallium," says Golmitz.

"No, there's no thallium in our drinking water. Anytime we would have something that we think would be a health effect and the letter states that don't worry you don't have to boil everything is fine. If there were a real concern for a real contamination of water, we would be notifying people immediately."

Golmitz says they're sorry for the confusion, and if this were to happen again they would send out a news release along with the state issued letter, which she says caused more harm than good.

Information on Thallium and its effects.